Design and expected performance of a variable-radii sinusoidal spiral x-ray spectrometer for the National Ignition Facility

2021 ◽  
Vol 92 (9) ◽  
pp. 093904
Author(s):  
N. A. Pablant ◽  
M. Bitter ◽  
P. C. Efthimion ◽  
L. Gao ◽  
K. W. Hill ◽  
...  
Keyword(s):  
National Ignition Facility ◽  
X Ray ◽  
Expected Performance

scholarly journals Investigation of high X-ray conversion efficiency Kr filled gas sources at the National Ignition Facility

2019 ◽  
Vol 26 (6) ◽  
pp. 063105 ◽  
Author(s):  
M. J. May ◽  
G. E. Kemp ◽  
J. D. Colvin ◽  
D. A. Liedahl ◽  
P. L. Poole ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
National Ignition Facility ◽  
X Ray

scholarly journals Multi-keV x-ray source development experiments on the National Ignition Facility

2010 ◽  
Vol 17 (8) ◽  
pp. 082701 ◽  
Author(s):  
K. B. Fournier ◽  
M. J. May ◽  
J. D. Colvin ◽  
J. O. Kane ◽  
M. Schneider ◽  
...  
Keyword(s):  
National Ignition Facility ◽  
X Ray

scholarly journals Capsule design for the National Ignition Facility

1999 ◽  
Vol 17 (2) ◽  
pp. 217-224 ◽  
Author(s):  
T.R. DITTRICH ◽  
S.W. HAAN ◽  
M.M. MARINAK ◽  
D.E. HINKEL ◽  
S.M. POLLAINE ◽  
...  
Keyword(s):  
Dopant Concentration ◽  
Three Dimensions ◽  
Initial Surface ◽  
National Ignition Facility ◽  
X Ray ◽  
Ongoing Effort ◽  
Surface Finishes ◽  
Material Homogeneity ◽  
Indirect Drive ◽  
Reduced Scale

Several choices exist in the design and production of capsules intended to ignite and propagate fusion burn of the deuterium–tritium (D–T) fuel when imploded by indirect drive at the National Ignition Facility (NIF). These choices include ablator material, ablator dopant concentration and distribution, capsule dimensions, and X-ray drive profile (shock timings and strengths). The choice of ablator material must also include fabrication and material characteristics, such as attainable surface finishes, permeability, strength, transparency to radio frequency and infrared radiation, thermal conductivity, and material homogeneity. Understanding the advantages and/or limitations of these choices is an ongoing effort for LLNL and LANL designers. At this time, simulations in one-, two-, and three-dimensions show that capsules with either a copper-doped beryllium or a polyimide (C22H10N2O4) ablator material have both the least sensitivity to initial surface roughnesses and favorable fabrication qualities. Simulations also indicate the existence of capsule designs based on these ablator materials which ignite and burn when imploded by less than nominal laser performance (900-kJ energy, 250-TW power, producing 250-eV peak radiation temperature). We will describe and compare these reduced-scale capsules, in addition to several designs which use the expected 300-eV peak X-ray drive obtained from operating the NIF laser at 1.3 MJ and 500 TW.

scholarly journals Bremsstrahlung x-ray generation for high optical depth radiography applications on the National Ignition Facility

2018 ◽  
Vol 89 (10) ◽  
pp. 10G121 ◽  
Author(s):  
C. M. Huntington ◽  
J. M. McNaney ◽  
E. Gumbrell ◽  
A. Krygier ◽  
C. Wehrenberg ◽  
...  
Keyword(s):  
Optical Depth ◽  
National Ignition Facility ◽  
X Ray

scholarly journals Combined neutron and x-ray imaging at the National Ignition Facility (invited)

2016 ◽  
Vol 87 (11) ◽  
pp. 11D703 ◽  
Author(s):  
C. R. Danly ◽  
K. Christensen ◽  
V. E. Fatherley ◽  
D. N. Fittinghoff ◽  
G. P. Grim ◽  
...  
Keyword(s):  
National Ignition Facility ◽  
X Ray ◽  
X Ray Imaging

scholarly journals Absolute calibration of the continuum x-ray spectrometer (ConSpec) at the National Ignition Facility

2019 ◽  
Vol 14 (12) ◽  
pp. P12009-P12009 ◽  
Author(s):  
M.J. MacDonald ◽  
B. Kozioziemski ◽  
A.G. MacPhee ◽  
M.B. Schneider ◽  
J. Ayers ◽  
...  
Keyword(s):  
Absolute Calibration ◽  
National Ignition Facility ◽  
X Ray ◽  
The Continuum

scholarly journals X-ray driven implosions at ignition relevant velocities on the National Ignition Facility

2013 ◽  
Vol 20 (5) ◽  
pp. 056311 ◽  
Author(s):  
N. B. Meezan ◽  
A. J. MacKinnon ◽  
D. G. Hicks ◽  
E. L. Dewald ◽  
R. Tommasini ◽  
...  
Keyword(s):  
National Ignition Facility ◽  
X Ray

scholarly journals X-ray drive of beryllium capsule implosions at the National Ignition Facility

2016 ◽  
Vol 717 ◽  
pp. 012058 ◽  
Author(s):  
D C Wilson ◽  
S A Yi ◽  
A N Simakov ◽  
J L Kline ◽  
G A Kyrala ◽  
...  
Keyword(s):  
National Ignition Facility ◽  
X Ray
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